1. Research and Development; St. Marys Pharmaceutical Unit; Cardiff and Vale University Health Board; Cardiff U.K.
2. Department of Dermatology; Prince Philip Hospital; Hywel Dda University Health Board; Carmarthenshire U.K.
3. Cochrane Institute of Primary Care and Public Health; School of Medicine; Cardiff University; Cardiff U.K.
4. Complex Pain Clinic; Department of Anaesthesia, Intensive Care and Pain Medicine; Cardiff and Vale University Health Board; Cardiff U.K.
5. Research Associate, St Mary's Pharmaceutical Unit; Cardiff and Vale University Health Board; Cardiff U.K.